Here is a code that reverses the words from the string.

import java.util.*;
class  ReverseWords{
    public static void main(String[] args)  {
        Scanner input=new Scanner(System.in);
        System.out.print("Enter String: ");
        String st=input.nextLine();
        StringBuffer buffer=new StringBuffer();
        String str[]=st.split(" ");
        for(int i=str.length-1;i>=0;i--){
        buffer.append(str[i]);
        buffer.append(" ");
        }
        System.out.println("Input: "+st);
        System.out.println("Output: "+buffer.toString());
    }
}